js-cfb/bits/05_buf.js

33 lines
1.2 KiB
JavaScript

var has_buf = (typeof Buffer !== 'undefined' && typeof process !== 'undefined' && typeof process.versions !== 'undefined' && process.versions.node);
var Buffer_from = /*::(*/function(){}/*:: :any)*/;
if(typeof Buffer !== 'undefined') {
var nbfs = !Buffer.from;
if(!nbfs) try { Buffer.from("foo", "utf8"); } catch(e) { nbfs = true; }
Buffer_from = /*::((*/nbfs ? function(buf, enc) { return (enc) ? new Buffer(buf, enc) : new Buffer(buf); } : Buffer.from.bind(Buffer)/*::) :any)*/;
// $FlowIgnore
if(!Buffer.alloc) Buffer.alloc = function(n) { var b = new Buffer(n); b.fill(0); return b; };
// $FlowIgnore
if(!Buffer.allocUnsafe) Buffer.allocUnsafe = function(n) { return new Buffer(n); };
}
function new_raw_buf(len/*:number*/) {
/* jshint -W056 */
return has_buf ? Buffer.alloc(len) : new Array(len);
/* jshint +W056 */
}
function new_unsafe_buf(len/*:number*/) {
/* jshint -W056 */
return has_buf ? Buffer.allocUnsafe(len) : new Array(len);
/* jshint +W056 */
}
var s2a = function s2a(s/*:string*/)/*:RawBytes*/ {
if(has_buf) return Buffer_from(s, "binary");
return s.split("").map(function(x/*:string*/)/*:number*/{ return x.charCodeAt(0) & 0xff; });
};
var chr0 = /\u0000/g, chr1 = /[\u0001-\u0006]/g;